Identify Signs: Step 1: Identify the signs of both numbers.Both numbers, −1 and −4, are negative.Calculation: No numbers to calculate yet.
Add Absolute Values: Step 2: Since both numbers are negative, add their absolute values. Absolute values are 1 and 4. Calculation: 1+4=5
Determine Final Sign: Step 3: Determine the sign of the final answer.Since both original numbers were negative, the result will also be negative.Calculation: −(1+4)=−5